Papers – Page 26 – TechConnect Briefs

Two routes for cobalt doping in ZnO nanostructures

Hari P., University of Tulsa, US

Two routes for cobalt doping in ZnO nanostructures Controlled growth of ZnO nanorods on various substrates is of great importance in photonic and electronic devices. Also of interest is increasing the optical activity of zinc [...]

Surface Treatment of Kevlar® Polyaramid Fibers with Imidazolium Dicationic-based Ionic Liquids

Moraes C.V., da Silva V.D., Schrekker H.S., Amico S.C., Federal University of Rio Grande do Sul, BR

Polyaramid fibers (Kevlar) can be used to strengthen materials due to their high tensile strength-to-weight ratio and high thermal stability. These properties of Kevlar fibers can be attributed to the intermolecular hydrogen bonds between the [...]

A nanocrystalline materials production technique for simultaneously improving several properties

Wang S.G., Institute of Metal Research, Chinese Academy of Sciences, CN

The concept of nanocrystalline metallic materials was put forward by Prof. Gleiter in 1980s [1]. From then on, nanocrystlline metallic materials have been extensively studied by the scientists all over the world [2]. The first [...]

A Mechanical Metamaterial with Extreme Stiffness and Strength

Berger J., Nama Development LLC, US

The significant performance of modern aerospace vehicles, deep-sea submersibles, high fuel efficiency automobiles, sports equipment, space telescopes, and a wide variety of other lightweighting applications, require that shape control be maintained under significant stress while [...]

Hybrid Processing Method for Fabrication of 3D Layered Nanocomposite Materials

Coulter K.E., Poenitzsch V.Z., DiPietro S., Wei R., Southwest Research Institute, US

Southwest Research Institute and Exothermics Inc. have been developing a hybrid processing method to fabricate macroscaled, layered nanocomposite materials that mimic the structure of nacre. Current research in the biomimetic field is pointing towards importance [...]

Evaluation of the genotoxic potential of different types of nanofibrillated celluloses

Catalán J., Lindberg H.K., Aimonen K.J., Wolff H., Wedin I., Nuopponen M., Savolainen K.M., Norppa H., Finnish Institute of Occupational Health, FI

Nanofibrillar cellulose (NFC) is among the most promising innovations in the forest industry. Due to its unique properties, NFC has a wide variety of possible applica-tions. As NFC consists of thin and long fibres with [...]

Moisture Uptake Characterization in Nanocellulose Using Microwave Cavity

Emiroglu C.D., Natarajan B., Gillman J.W., Liddle J.A., Obrzut J., National Institute of Standards and Technology, US

Nanocellulose has been a continuously emerging area of interest over the recent years due to inexpensive, abundant, and renewable nature of the material source. Cellulose nanocrystals (CNCs) are regarded to be highly useful candidates as [...]

Binder applications of cellulose nanofibrils: new developments

Tajvidi M., Leng W., Hunt J.F., Diop C., Bousfield D., Gardner D., Amini E., Bilodeau M., Gramlich W., Laboratory of Renewable Nanomaterials, University of Maine, US

A key path towards the commercialization of cellulose nanomaterials is to target large-volume applications in commodity products where a successful market introduction could potentially mobilize orchestrated efforts to revitalize the forest products industry. At the [...]

Preparation, Characterization and Application of Nanocellulose

Volkert B., Hettrich K., Fischer S., Fraunhofer Institute for Applied Polymer Research IAP, DE

Novel spherical nano-scaled cellulose particles have been prepared by high-pressure homogenizing of four different types of pre-treated cellulose samples with MICROFLUIDIZER™ processor (MF) in aqueous media. One possibility of pre-treatment is a decrystallization step realized [...]

Effect of CNT Morphology and Alignment on the Interfacial and the Elastic Properties of Nanocomposites

Alian A.R., Meguid S.A., University of Toronto, CA

Carbon nanotubes (CNTs) are typically curved, agglomerated and aggregated as a result of van der Waal interactions and electrostatic forces. It has been proven experimentally that CNT morphology and alignment affect the mechanical, electrical, and [...]